Update-
Got the knob. Its bad a$$.
Removal of the stock knob wasn't that hard, just got the recommended strap wrench tool and it came right off. Easy.
Put the knob on, there is a gap between the knob and the leather. its about half an inch or so.

I love the feel of the knob and everything but I will have to get rid of that gap....
WHERE CAN I BUY A LITTLE CUFF THAT WILL MAKE IT FLUSH?
PLEASE HELP!!!!